CN102273618A - Preparation process of non-soluble dietary fiber - Google Patents
Preparation process of non-soluble dietary fiber Download PDFInfo
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- CN102273618A CN102273618A CN 201010199896 CN201010199896A CN102273618A CN 102273618 A CN102273618 A CN 102273618A CN 201010199896 CN201010199896 CN 201010199896 CN 201010199896 A CN201010199896 A CN 201010199896A CN 102273618 A CN102273618 A CN 102273618A
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- 235000013325 dietary fiber Nutrition 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 96
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000001301 oxygen Substances 0.000 claims abstract description 81
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 81
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims description 127
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 62
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 60
- 238000006243 chemical reaction Methods 0.000 claims description 55
- 239000000126 substance Substances 0.000 claims description 35
- 230000035484 reaction time Effects 0.000 claims description 32
- 235000017550 sodium carbonate Nutrition 0.000 claims description 31
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 31
- 238000004061 bleaching Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 24
- 241000209140 Triticum Species 0.000 claims description 21
- 235000021307 Triticum Nutrition 0.000 claims description 21
- 239000010902 straw Substances 0.000 claims description 21
- 229920005610 lignin Polymers 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 19
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 16
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 16
- 241001330002 Bambuseae Species 0.000 claims description 16
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 16
- 239000003513 alkali Substances 0.000 claims description 16
- 239000011425 bamboo Substances 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 16
- 241000196324 Embryophyta Species 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 239000007844 bleaching agent Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 235000013305 food Nutrition 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 240000007087 Apium graveolens Species 0.000 description 1
- 235000015849 Apium graveolens Dulce Group Nutrition 0.000 description 1
- 235000010591 Appio Nutrition 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 206010010774 Constipation Diseases 0.000 description 1
- 208000005016 Intestinal Neoplasms Diseases 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 201000002313 intestinal cancer Diseases 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 235000015099 wheat brans Nutrition 0.000 description 1
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- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
The invention discloses a preparation process of non-soluble dietary fiber, mainly comprising the following five steps of: (1) selecting plant raw materials; (2) purifying; (3) delignificating; (4) rinsing; and (5) carrying out ultramicro smashing. Oxygen delignification and rinsing with hydrogen peroxide are adopted, whiteness is effectively improved to more than 80 degrees, the preparation process is simple, and cost is low, thus the preparation process disclosed by the invention has wide market value.
Description
[technical field]
The present invention relates to the food additives production field, more particularly, relate to a kind of preparation of non-solubility dietary fiber.
[background technology]
All be absorbed in the extraction of soluble dietary fiber in the market, but not the production of soluble dietary fiber does not appear in the newspapers as yet.The non-solubility fiber comprises cellulose, lignin and part hemicellulose, from the wheat bran in the food, corn bran, celery, pericarp and rhizome vegetables.The non-solubility fiber can reduce the risk of suffering from intestinal cancer, the noxious material in can assimilating food simultaneously, the toxin that bacterium is discharged in the prevention constipation and the alimentary canal that weakens.Dietary fiber is the 7th nutrient, along with growth in the living standard, needs in a large number cheaply that the non-solubility dietary fiber is added in the food, satisfies the different food products performance requirement, makes the product feature of food better.
The domestic industrial production that does not still have the non-solubility dietary fiber, Germany JRS, U.S. internat fibre has production non-solubility dietary fiber technology and carries out large-scale production, but non-solubility dietary fiber complex process, cost height that their technology is produced.Report non-solubility dietary fiber preparation method is also arranged at present, mainly adopt the acidolysis lignin, technologies such as hydrogen peroxide bleaching.To removing lignin and colored substance aspect, use hydrogen peroxide to fail to reach the purpose that the degree of depth is removed lignin and colourity separately, the whiteness that shows wheat straw class non-solubility dietary fiber is paced up and down between 70-75 °, the residual volume of lignin can influence the water retention property of non-solubility dietary fiber, and low whiteness will have influence on consumer's sense organ.
[summary of the invention]
Technical problem to be solved by this invention is, provides a kind of plant material that utilizes to extract cellulose and hemicellulose, and the preparation whiteness reaches the method for the non-solubility dietary fiber more than 80 °.
In order to address the above problem, the invention provides a kind of preparation technology of non-solubility dietary fiber, may further comprise the steps:
(1) chooses plant material;
(2) purify: raw material, food-grade soda ash and the water of step (1) acquisition are put into the reaction of high-temperature high-voltage reaction device obtain slurry, described food-grade soda ash is meant that concentration reaches the soda ash of 380-410g/L;
(3) deoxidation lignin: the slurry that step (2) is obtained reacts in oxygen reactor, and reaction condition is as follows:
Reaction time 40-70min
Slurry concentration 7-12%
Slurry temperature 85-105 ℃
Reactor pressure 250-600KPa
Slurry pH value 10-12
The chemicals, the chemical concentration that use:
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.350.45MPa
150-200 ℃ of low-pressure steam temperature
Oxygen purity 〉=93%
Oxygen pressure 0.85-1.5Mpa
Sodium hydroxide solution≤400g/L
Chemicals usage:
Oxygen 15-40kg/aPmt
NaOH 10-30kg/aPmt
(4) bleaching: the slurry after step (3) is handled through following three phases bleaching obtain that purity reaches 97%, non-solubility dietary fiber on 80 ° of the whiteness:
A section: bleach with hydrogen peroxide
B section: under the oxygen effect, use the alkali extracting
C section: bleach with hydrogen peroxide
The chemicals and the steam condition that use:
Hydrogen peroxide solution concentration 30g/l (hydrogen peroxide)
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
The reaction condition of described A section:
Reaction time 50-80min
Slurry concentration 8-12%
Slurry temperature 45-70 ℃
Slurry pH value 2.5-4.5
Hydrogen peroxide and slurry react at the A reactor by above condition, and described A reactor is the closed container that mixing arrangement is housed;
The reaction condition of described B section:
Reaction time 100-140min
Slurry concentration 8-12%
Slurry temperature 65-80 ℃
Slurry pH value 11.0-13.0
Hydrogen peroxide and slurry react at the B reactor by above condition, and described B reactor is the closed container that mixing arrangement is housed;
The reaction condition of described C section:
Reaction time 120-175min
Slurry concentration 8-12%
Slurry temperature 60-75 ℃
Slurry pH value 3.5-5.5
Hydrogen peroxide and slurry react in the C reactor by above condition, and described C reactor is the closed container that mixing arrangement is housed;
(5) ultramicro grinding: adopt superfine grinding method that the good non-solubility dietary fiber of drying is pulverized.
Preferably from the plant material wheat straw, extract the non-solubility dietary fiber, may further comprise the steps:
(1) choose plant material, described plant material is a wheat straw, and wheat straw moisture is at 10-30%, and blade length is at 20-50mm;
(2) purify: wheat straw, food-grade soda ash and the water of step (1) acquisition are put into the reaction of high-temperature high-voltage reaction device obtain slurry, described food-grade soda ash is meant that concentration reaches the soda ash of 380-410g/L;
Concrete addition is as follows:
Food-grade soda ash (quality percentage composition, over dry grass amount is calculated relatively): 15-20
Over dry wheat straw weight: water weight 1: 3.0-5.0
Reaction condition and the process of wheat straw in reactor
(3) deoxidation lignin: the slurry that step (2) is obtained reacts in oxygen reactor, and reaction condition is as follows:
Reaction time 40-60min
Slurry concentration 7-12%
Slurry temperature 85-105 ℃
Reactor pressure 250-450KPa
Slurry pH value 10-12
The chemicals, the chemical concentration that use:
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Oxygen purity 〉=93%
Oxygen pressure 0.85-1.5Mpa
Sodium hydroxide solution≤400g/L
Chemicals usage:
Oxygen 15-40kg/aPmt
NaOH 10-20kg/aPmt
(4) bleaching: the slurry after step (3) is handled through following three phases bleaching obtain that purity reaches 97%, non-solubility dietary fiber on 80 ° of the whiteness:
A section: bleach with hydrogen peroxide
B section: under the oxygen effect, use the alkali extracting
C section: bleach with hydrogen peroxide
The chemicals and the steam condition that use:
Hydrogen peroxide solution concentration 30g/l (hydrogen peroxide)
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
The reaction condition of described A section:
Reaction time 50-70min
Slurry concentration 8-12%
Slurry temperature 45-60 ℃
Slurry pH value 2.5-4.5
The reaction condition of described B section:
Reaction time 100-140min
Slurry concentration 8-12%
Slurry temperature 65-80 ℃
Slurry pH value 11.0-13.0
The reaction condition of described C section:
Reaction time 120-160min
Slurry concentration 8-12%
Slurry temperature 60-75 ℃
Slurry pH value 3.5-5.5
(5) ultramicro grinding: adopt superfine grinding method that the good non-solubility dietary fiber of drying is pulverized.
Preferably from the plant material bamboo, extract the non-solubility dietary fiber, may further comprise the steps:
(1) choose plant material, described plant material is a bamboo, length :≤10cm, area :≤20cm
2
(2) purify: bamboo, food-grade soda ash and the water of step (1) acquisition are put into the reaction of high-temperature high-voltage reaction device obtain slurry, described food-grade soda ash is meant that concentration reaches the soda ash of 380-410g/L;
Concrete addition is as follows:
Food-grade soda ash (quality percentage composition, the over dry bamboo calculates relatively): 20-30
Over dry bamboo weight: water weight 1: 4.0-6.0
Reaction condition and the process of bamboo in reactor
| Time (min) | Pressure (MPa) | |
| Once heat up | 30 | 0→0.45 |
| Insulation | 20 | 0.45 |
| Exhaust decompression | 15-20 | 0.45→0.15 |
| Secondary temperature elevation | 40-60 | 0.15→0.7 |
| Insulation | 150-210 | 0.70 |
(3) deoxidation lignin: the slurry that step (2) is obtained reacts in oxygen reactor, and reaction condition is as follows:
Reaction time 45-70min
Slurry concentration 7-12%
Slurry temperature 85-105 ℃
Reactor pressure 260-600KPa
Slurry pH value 10-12
The chemicals, the chemical concentration that use:
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Oxygen purity 〉=93%
Oxygen pressure 0.85-1.5Mpa
Sodium hydroxide solution≤400g/L
Chemicals usage:
Oxygen 20-40kg/aPmt
NaOH 20-30kg/aPmt
(4) bleaching: the slurry after step (3) is handled through following three phases bleaching obtain that purity reaches 97%, non-solubility dietary fiber on 80 ° of the whiteness:
A section: bleach with hydrogen peroxide
B section: under the oxygen effect, use the alkali extracting
C section: bleach with hydrogen peroxide
The chemicals and the steam condition that use:
Hydrogen peroxide solution concentration 30g/l (hydrogen peroxide)
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
The reaction condition of described A section:
Reaction time 60-80min
Slurry concentration 8-12%
Slurry temperature 50-70 ℃
Slurry pH value 2.5-4.5
The reaction condition of described B section:
Reaction time 100-140min
Slurry concentration 8-12%
Slurry temperature 65-80 ℃
Slurry pH value 11.0-13.0
The reaction condition of described C section:
Reaction time 135-175min
Slurry concentration 8-12%
Slurry temperature 65-75 ℃
Slurry pH value 3.5-5.5
(5) ultramicro grinding: adopt superfine grinding method that the good non-solubility dietary fiber of drying is pulverized.
Slurry concentration described in the literary composition all is meant the stock quality percent concentration.
The invention has the advantages that the raw material sources that adopt (1) are extensive, Chinese vast rural area has a large amount of plants such as wheat straw can supply to utilize, and the raw materials for production cost is low; (2) produce on the existing equipment basis, theme equipment such as high-temperature high-voltage reaction device, oxidation reactor, hydrogen peroxide reactor all can be had made to order at home, reduce cost of investment; (3) foodsafety height, in the production process, the chemicals of employing all is ripe at present food-grade chemicals, as soda ash, hydrogen peroxide, oxygen; (4) recycling crops alleviate agricultural waste material and pollute, and form ecological chain; (5) non-solubility dietary fiber preparation technology disclosed by the invention, cost is low, and quality reaches external like product, in a short time can substituting import one non-solubility diet fiber product.
[specific embodiment]
Embodiment 1
1, raw material is chosen (it is example that wheat straw is selected in this experiment for use)
Select wheat straw for use: wheat straw moisture can not be excessive, and moisture is at 10-30%
Section wheat straw: blade length: 20-50mm
2, purify
The wheat straw for preparing is put into the high-temperature high-voltage reaction device, add food-grade soda ash and an amount of water in reactor, described food-grade soda ash is meant that concentration reaches the soda ash of 380-410g/L;
Concrete addition is as follows:
1) food-grade soda ash (quality percentage composition, over dry grass amount is calculated relatively): 15-20
Over dry wheat straw weight: water weight 1: 3.0-5.0
2) reaction condition and the process of wheat straw in reactor
3, oxygen delignification
1) former material auxiliary material feature
The wheat straw of raw material after high temperature high pressure process, the hereinafter referred slurry
K value 11-15
2) oxygen delignification
Reaction time 40-60min
Slurry concentration 7-12%
Slurry temperature 85-105 ℃
Reactor pressure 250-450KPa
Slurry pH value 10-12
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Sodium hydroxide solution≤400 gram NaOH/l
Oxygen 15-40kg/aPmt
NaOH 10-20kg/aPmt
Purification is main to remove the lignin process, continues and oxygen delignification can be thought to purify.Here, oxygen can oxidation and the residual lignin that dissolves after making an appointment with half to purify.In course of reaction, the pH value of slurry is controlled with sodium hydroxide solution.
Slurry reacts in oxygen reactor by above condition.
4, bleaching
Hydrogen peroxide solution concentration 30g/l (hydrogen peroxide)
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Behind the oxygen delignification, the last removing of lignin and coloring matter is to finish at bleachery.The residue lignin will mainly be removed by dioxygen aquation and alkali extracting.At last, slurry is further bleached in the C section.Bleaching comprises following sub-process.
A section (bleaching) with hydrogen peroxide
B section (under the oxygen effect, using the alkali extracting)
C section (bleaching) with hydrogen peroxide
A section (bleaching) with hydrogen peroxide
Reaction condition
Reaction time 50-70min
Slurry concentration 8-12%
Slurry temperature 45-60 ℃
Slurry pH value (acid is regulated) 2.5-4.5
Hydrogen peroxide and slurry react at the A reactor by above condition, and described A reactor is the closed container that mixing arrangement is housed.
B section (the alkali extracting under the oxygen effect)
Reaction time 100-140min
Slurry concentration 8-12%
Slurry temperature 65-80 ℃
Slurry pH value (alkali adjusting) 11.0-13.0
Hydrogen peroxide and slurry react at the B reactor by above condition, and described B reactor is the closed container that mixing arrangement is housed.
C section (bleaching) with hydrogen peroxide
Reaction time 120-160min
Slurry concentration 8-12%
Slurry temperature 60-75 ℃
Slurry pH value (acid is regulated) 3.5-5.5
Hydrogen peroxide reacts in the C reactor by above condition with slurry, and described C reactor is the closed container that mixing arrangement is housed.
Through purification, oxygen delignification, 3 flow processs of bleaching, purity reaches 97% with obtaining, the non-solubility dietary fiber on 80 ° of the whiteness.
5, ultramicro grinding
Adopt superfine grinding method (particle size can up to 30 μ m) that the good non-solubility dietary fiber of drying is pulverized, be ground into the non-solubility dietary fiber of different meshes, make it have special impression performance.Satisfy different food products and add demand.
Embodiment 2
1, raw material is chosen
Bamboo length :≤10cm; Area :≤20cm2.
2, purify
The bamboo for preparing is put into the high-temperature high-voltage reaction device, add food-grade soda ash and an amount of water in reactor, described food-grade soda ash is meant that concentration reaches the soda ash of 380-410g/L; Concrete addition is as follows:
1) food-grade soda ash (quality percentage composition, the over dry bamboo calculates relatively): 20-30
Over dry bamboo weight: water weight 1: 4.0-6.0
2) reaction condition and the process of bamboo in reactor
| Time (min) | Pressure (MPa) | |
| Once heat up | 30 | 0→0.45 |
| Insulation | 20 | 0.45 |
| Exhaust decompression | 15-20 | 0.45→0.15 |
3, deoxidation lignin
1) former material auxiliary material feature
Raw material: the true qualities non-solubility fiber after high temperature high pressure process, hereinafter referred slurry
K value 12-18
2) oxygen delignification
Reaction time 45-70min
Slurry concentration 7-12%
Slurry temperature 85-105 ℃
Reactor pressure 260-600KPa
Slurry pH value 10-12
The chemicals, the chemical concentration that use
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Sodium hydroxide solution≤400 gram NaOH/l
Oxygen 20-40kg/aPmt
NaOH 20-30kg/aPmt
Purification is main to remove the lignin process, continues and oxygen delignification can be thought to purify.Here, oxygen can oxidation and the residual lignin that dissolves after making an appointment with half to purify.In course of reaction, the pH value of slurry is controlled with sodium hydroxide solution.
Slurry reacts in oxygen reactor by above condition.
4, bleaching
Hydrogen peroxide solution concentration 30g/l (hydrogen peroxide)
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Behind the oxygen delignification, the last removing of lignin and coloring matter is to finish at bleachery.The residue lignin will mainly be removed by dioxygen aquation and alkali extracting.At last, slurry is further bleached in the C section.Bleaching comprises following sub-process.
A section (bleaching) with hydrogen peroxide
B section (under the oxygen effect, using the alkali extracting)
C section (bleaching) with hydrogen peroxide
A section (bleaching) with hydrogen peroxide
A) reaction condition
Reaction time 60-80min
Slurry concentration 8-12%
Slurry temperature 50-70 ℃
Slurry pH value (acid is regulated) 2.5-4.5
Hydrogen peroxide and slurry react at the A reactor by above condition, and described A reactor is the closed container that mixing arrangement is housed.
B section (the alkali extracting under the oxygen effect)
Reaction time 110-140min
Slurry concentration 8-12%
Slurry temperature 65-80 ℃
Slurry pH value (alkali adjusting) 11.0-13.0
Hydrogen peroxide and slurry react at the B reactor by above condition, and described B reactor is the closed container that mixing arrangement is housed.
C section (bleaching) with hydrogen peroxide
Reaction time 135-175min
Slurry concentration 8-12%
Slurry temperature 65-75 ℃
Slurry pH value (acid is regulated) 3.5-5.5
Hydrogen peroxide reacts in the C reactor by above condition with slurry, and described C reactor is the closed container that mixing arrangement is housed.
Through purification, oxygen delignification, 3 flow processs of bleaching, purity reaches 97% with obtaining, the non-solubility dietary fiber on 80 ° of the whiteness.
5, ultramicro grinding
Adopt superfine grinding method (particle size can up to 30 μ m) that the good non-solubility dietary fiber of drying is pulverized, be ground into the non-solubility dietary fiber of different meshes, make it have special impression performance.Satisfy different food products and add demand.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. the preparation technology of a non-solubility dietary fiber is characterized in that, may further comprise the steps:
(1) chooses plant material;
(2) purify: raw material, food-grade soda ash and the water of step (1) acquisition are put into the reaction of high-temperature high-voltage reaction device obtain slurry, described food-grade soda ash is meant that concentration reaches the soda ash of 380-410g/L;
(3) deoxidation lignin: the slurry that step (2) is obtained reacts in oxygen reactor, and reaction condition is as follows:
Reaction time 40-70min
Stock quality percent concentration 7-12%
Slurry temperature 85-105 ℃
Reactor pressure 250-600KPa
Slurry pH value 10-12
The chemicals, the chemical concentration that use:
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Oxygen purity 〉=93%
Oxygen pressure 0.85-1.5Mpa
Sodium hydroxide solution≤400g/L
Chemicals usage:
Oxygen 15-40kg/aPmt
NaOH 10-30kg/aPmt
(4) bleaching: the slurry after step (3) is handled through following three phases bleaching obtain that purity reaches 97%, non-solubility dietary fiber on 80 ° of the whiteness:
A section: bleach with hydrogen peroxide
B section: under the oxygen effect, use the alkali extracting
C section: bleach with hydrogen peroxide
The chemicals and the steam condition that use:
Hydrogen peroxide solution concentration 30g/l (hydrogen peroxide)
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
The reaction condition of described A section:
Reaction time 50-80min
Stock quality percent concentration 8-12%
Slurry temperature 45-70 ℃
Slurry pH value 2.5-4.5
Hydrogen peroxide and slurry react at the A reactor by above condition, and described A reactor is the closed container that mixing arrangement is housed;
The reaction condition of described B section:
Reaction time 100-140min
Stock quality percent concentration 8-12%
Slurry temperature 65-80 ℃
Slurry pH value 11.0-13.0
Hydrogen peroxide and slurry react at the B reactor by above condition, and described B reactor is the closed container that mixing arrangement is housed;
The reaction condition of described C section:
Reaction time 120-175min
Stock quality percent concentration 8-12%
Slurry temperature 60-75 ℃
Slurry pH value 3.5-5.5
Hydrogen peroxide and slurry react in the C reactor by above condition, and described C reactor is the closed container that mixing arrangement is housed;
(5) ultramicro grinding: adopt superfine grinding method that the good non-solubility dietary fiber of drying is pulverized.
2. the preparation technology of non-solubility dietary fiber according to claim 1 is characterized in that, may further comprise the steps:
(1) choose plant material, described plant material is a wheat straw, and wheat straw moisture is at 10-30%, and blade length is at 20-50mm;
(2) purify: wheat straw, food-grade soda ash and the water of step (1) acquisition are put into the reaction of high-temperature high-voltage reaction device obtain slurry, described food-grade soda ash is meant that concentration reaches the soda ash of 380-410g/L;
Concrete addition is as follows:
Food-grade soda ash (quality percentage composition, over dry grass amount is calculated relatively): 15-20
Over dry wheat straw weight: water weight 1: 3.0-5.0
Reaction condition and the process of wheat straw in reactor:
Once heat up time: 30min, pressure: 0 → 0.45MPa
Exhaust decompression, time: 15-20min, pressure: 0.45 → 0.15MPa
Secondary temperature elevation, time: 40min, pressure: 0.15 → 0.60MPa
Insulation, time: 120-180min, pressure: 0.60MPa
Fiber quality index: hardness, i.e. KMnO
4Value: 11-15K
Residual alkali surplus: 16-25g/l
(3) deoxidation lignin: the slurry that step (2) is obtained reacts in oxygen reactor, and reaction condition is as follows:
Reaction time 40-60min
Stock quality percent concentration 7-12%
Slurry temperature 85-105 ℃
Reactor pressure 250-450KPa
Slurry pH value 10-12
The chemicals, the chemical concentration that use:
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Oxygen purity 〉=93%
Oxygen pressure 0.85-1.5Mpa
Sodium hydroxide solution≤400g/L
Chemicals usage:
Oxygen 15-40kg/aPmt
NaOH 10-20kg/aPmt
(4) bleaching: the slurry after step (3) is handled through following three phases bleaching obtain that purity reaches 97%, non-solubility dietary fiber on 80 ° of the whiteness:
A section: bleach with hydrogen peroxide
B section: under the oxygen effect, use the alkali extracting
C section: bleach with hydrogen peroxide
The chemicals and the steam condition that use:
Hydrogen peroxide solution concentration 30g/l (hydrogen peroxide)
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
The reaction condition of described A section:
Reaction time 50-70min
Stock quality percent concentration 8-12%
Slurry temperature 45-60 ℃
Slurry pH value 2.5-4.5
The reaction condition of described B section:
Reaction time 100-140min
Stock quality percent concentration 8-12%
Slurry temperature 65-80 ℃
Slurry pH value 11.0-13.0
The reaction condition of described C section:
Reaction time 120-160min
Stock quality percent concentration 8-12%
Slurry temperature 60-75 ℃
Slurry pH value 3.5-5.5
(5) ultramicro grinding: adopt superfine grinding method that the good non-solubility dietary fiber of drying is pulverized.
3. the preparation technology of non-solubility dietary fiber according to claim 1 is characterized in that, may further comprise the steps:
(1) choose plant material, described plant material is a bamboo, length :≤10cm, area :≤20cm
2
(2) purify: bamboo, food-grade soda ash and the water of step (1) acquisition are put into the reaction of high-temperature high-voltage reaction device obtain slurry, described food-grade soda ash is meant that concentration reaches the soda ash of 380-410g/L;
Concrete addition is as follows:
Food-grade soda ash (quality percentage composition, the over dry bamboo calculates relatively): 20-30
Over dry bamboo weight: water weight 1: 4.0-6.0
Reaction condition and the process of bamboo in reactor:
Once heat up time: 30min, pressure: 0 → 0.45MPa
Insulation, time: 20min, pressure: 0.45MPa
Exhaust decompression, time: 15-20min, pressure: 0.45 → 0.15MPa
Secondary temperature elevation, time: 40-60min, pressure: 0.15 → 0.70MPa
Insulation, time: 150-210min, pressure: 0.70MPa
Fiber quality index: hardness, i.e. KMnO
4Value: 12-18K
Residual alkali surplus: 25-34g/l
(3) deoxidation lignin: the slurry that step (2) is obtained reacts in oxygen reactor, and reaction condition is as follows:
Reaction time 45-70min
Stock quality percent concentration 7-12%
Slurry temperature 85-105 ℃
Reactor pressure 260-600KPa
Slurry pH value 10-12
The chemicals, the chemical concentration that use:
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
Oxygen purity 〉=93%
Oxygen pressure 0.85-1.5Mpa
Sodium hydroxide solution≤400g/L
Chemicals usage:
Oxygen 20-40kg/aPmt
NaOH 20-30kg/aPmt
(4) bleaching: the slurry after step (3) is handled through following three phases bleaching obtain that purity reaches 97%, non-solubility dietary fiber on 80 ° of the whiteness:
A section: bleach with hydrogen peroxide
B section: under the oxygen effect, use the alkali extracting
C section: bleach with hydrogen peroxide
The chemicals and the steam condition that use:
Hydrogen peroxide solution concentration 30g/l (hydrogen peroxide)
Oxygen (purity) 〉=93%
Oxygen pressure 0.85-1.5Mpa
Low-pressure steam 0.35-0.45MPa
150-200 ℃ of low-pressure steam temperature
The reaction condition of described A section:
Reaction time 60-80min
Stock quality percent concentration 8-12%
Slurry temperature 50-70 ℃
Slurry pH value 2.5-4.5
The reaction condition of described B section:
Reaction time 100-140min
Stock quality percent concentration 8-12%
Slurry temperature 65-80 ℃
Slurry pH value 11.0-13.0
The reaction condition of described C section:
Reaction time 135-175min
Stock quality percent concentration 8-12%
Slurry temperature 65-75 ℃
Slurry pH value 3.5-5.5
(5) ultramicro grinding: adopt superfine grinding method that the good non-solubility dietary fiber of drying is pulverized.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102578593A (en) * | 2012-02-20 | 2012-07-18 | 淮阴师范学院 | Corn straw core stalk dietary fiber and preparation method thereof |
| CN106723090A (en) * | 2016-11-28 | 2017-05-31 | 胜利 | A kind of preparation method of Dietary Fiber from Wheat Straw |
| CN110756136A (en) * | 2019-11-04 | 2020-02-07 | 上海同化新材料科技有限公司 | Device for producing dietary fiber in ball in one piece |
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| CN102578593A (en) * | 2012-02-20 | 2012-07-18 | 淮阴师范学院 | Corn straw core stalk dietary fiber and preparation method thereof |
| CN106723090A (en) * | 2016-11-28 | 2017-05-31 | 胜利 | A kind of preparation method of Dietary Fiber from Wheat Straw |
| CN110756136A (en) * | 2019-11-04 | 2020-02-07 | 上海同化新材料科技有限公司 | Device for producing dietary fiber in ball in one piece |
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| CN102273618B (en) | 2013-04-03 |
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